OpenEuphoria

Re: Offtopic - sampling problem

• Posted by rforno at tutopia.com Jan 26, 2002
• 440 views

Some sound-processing systems use algorithms to "soften" sound and to
"sharpen" it. I think this is what you need. However:
1) I don't know the algorithms.
2) It seems, according to the results obtained, that "soften" algorithms are
OK, but "sharpen" ones do not work very well (in order to restore the
original signal), due to the fact that some information is lost forever.
----- Original Message -----
From: "Mike" <vulcan at win.co.nz>
To: "EUforum" <EUforum at topica.com>
Subject: Offtopic - sampling problem


>
> Hi All,
>
> I am trying to solve a sampling problem and I have simplified it as
> below.
> Imagine this set contains precisely accurate real-world data that we
> wish to record into
> the computer (could be temperature or anything)
>
> 1,   4,    2,    6,    5,    7,   3,   9,   4
>
> Now, suppose we tried to capture each iteration with a sampling system
> that was not
> focussed narrowly enough and so each sampled value acquired contained
> some overlap
> from each adjacent value, assuming a spread of 25%, 50%, 25% we would
> get:
>
> 1.5, 2.75, 3.5, 4.75, 5.75, 5.5, 5.5, 6.25, 4.25
>
> Each captured value tends to get "smeared" toward the average value
>
> My Question is this: Does anyone know of or could point to a way to
> focus
> the 2nd sample set back to the original set?
>
> Any help on this is really appreciated.
>
> Yours truly
> Mike
> vulcan at win.co.nz
>
>
>
>